Donna in PA - my mother spoke of you as if you were a close personal friend after we has an amazing tour of the Scavi and then again breezed through the hassles of the Vatican museum so thank you very much! We're headed back to Rome in October and we'll be thanking you again as we scored an evening admission to the museum.
Donna W - Donna brings up a great point - no one else is getting tickets so all will really work out. If you have time I'd highly suggest Donna's previous thoughts on taking the the Scavi tour. You will get that through the Vatican site and its a bit different in terms of booking because you tell them when you are available and they will honor you with a spot if possible, assigning you a time. They are tricky tickets to get and well, well worth it; please know this comes from someone who is not into such things generally but it was by far one of the highlights of my previous trip to Rome.
Wishing you a wonderful trip.
Lisa